输入若干个学生的信息（学号、姓名、成绩），当输入学号为0时结束，用单向链表组织这些学生信息后，再按顺序输出。 输入样例: 1 zhang 78 2 wang 80 3 li 75 4 zhao 85 0 输出样例: 1 zhang 78 2 wang 80 3 li 75 4 zhao 85 用c语言程序写代码

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct Student {
    int num;
    char name[20];
    int score;
    struct Student *next;
};

struct Student *createList() {
    struct Student *head, *tail, *node;
    int num, score;
    char name[20];
    head = tail = NULL;
    scanf("%d", &num);
    while (num != 0) {
        scanf("%s%d", name, &score);
        node = (struct Student *)malloc(sizeof(struct Student));
        node->num = num;
        strcpy(node->name, name);
        node->score = score;
        node->next = NULL;
        if (head == NULL) {
            head = tail = node;
        } else {
            tail->next = node;
            tail = node;
        }
        scanf("%d", &num);
    }
    return head;
}

void printList(struct Student *head) {
    struct Student *p = head;
    while (p != NULL) {
        printf("%d %s %d\n", p->num, p->name, p->score);
        p = p->next;
    }
}

int main() {
    struct Student *head;
    head = createList();
    printList(head);
    return 0;
}